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感染程度     
相关语句
  infection degree
     There were no remarkable relationship between H. pylori infection degree arid levels of anti-H, pylori IgG IgA.
     pylori IgG、IgA水平与H. pylori感染程度无明显相关关系。
短句来源
     Conclusion: IgG subclass deficiencies of COPD patients probably exist and the immunomodulator should be used according to certain infection degree.
     结论 :部分 COPD患者急发期可存在 Ig G亚类缺陷 ,应根据其临床感染程度使用免疫调节剂
短句来源
     Restricted by the conditions of climate, producing place, infection degree, product output, and processing techniques, the content of resveratrol in grape wine was not high and the distribution of resveratrol was unbalanced.
     因受气候、产地、感染程度、产量、加工工艺等制约,现有葡萄酒中白藜芦醇含量不高、不均衡。
短句来源
     Yam virus category in the west of Fujian province were examined by the technology of RT--PCR,the result showed that all yam variety in the west of Fujian province were differently infected by virus, the virus category and infection degree were varied obviously among the yam varieties.
     本文采用反转录聚合酶链反应(RT—PCR)技术检测闽西地区山药病毒种类,结果表明,目前闽西地区栽培的山药品种均不同程度地感染病毒,其感染的病毒种类和病毒感染程度在不同山药品种间差异明显。
短句来源
     Results There was no statistical difference in infection degree of pin sites between both groups,aside from no severe infection in them.
     结果两组针道感染程度比较,差异无统计学意义,均无出现重度感染;
短句来源
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  infection extent
     As an important pathogenic factor, bacteria can increase TNF-α before and after the treatment, the level of whichis positively related to the infection extent.
     TNF—α水平治疗前后动态观察充分说明了细菌作为一种重要病原因子诱导TNF—α增加,且TNF—α水平与感染程度成正相关。
短句来源
  infectious degree
     Results The infectious degree of fetal lungs in Dexamethasone treated group was markedly more severe than that in EGF treated group and the control. No signifcant difference was found among EGF treated ,TRH treated and the control groups.
     结果 地塞米松治疗组胎肺感染程度明显重于EGF治疗组和对照组 ,EGF、TRH治疗组和对照组之间无明显差异。
短句来源
     In this report, 134 shrimps in various infectious degree were collected, and the amount of virus in each sample was determined by quantitative PCR.
     收集了 6批共 134尾不同感染程度的对虾样品 ,测定其WSBV含量。
短句来源
  “感染程度”译为未确定词的双语例句
     Theexpression of P16INK4a、CyclinE、CDK2 may reflect the seriousness ofHPV infection .
     P16INK4a、CyclinE、CDK2 在一定程度上可反映 HPV 的感染程度,可作为宫颈癌筛查的指标。
短句来源
     The infected level were 28℃ group> 23℃ group > 33℃ group > 15℃ group.
     各组病毒感染强弱依次为:28℃组> 23℃组> 33℃组> 15℃组,感染程度与LT50负相关。
短句来源
     The expression of HPV16E7 in the various cervical lesions is abnormal. HPV16E7 may reflect the seriousness of HPV16 infection to some extent.
     HPV16E7在宫颈病变中异常表达,且在一定程度上可以反映HPV16的感染程度
短句来源
     Detection of serum NO and NOS could observe the degree and prognosis of HBV infection.
     检测血清NO、NOS可观察HBV感染程度和预后。
短句来源
     However, the cure rates after treatment increased year after year i.e. 80.90%(1991), 96.43%(1992), 97.50%(1993), 97.87%(1994);
     随着感染程度的不断下降,化疗的即时疗效逐年提高,阴转率为80.90%(1991)、96.43%(1992)、97.50%(1993)和97.87%(1994);
短句来源
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  intensity of infection
In all patterns of single and concurrent infections, the intensity of infection was directly related to fish size.
      
= 27, p >amp;lt; 0.05) between intensity of infection and host size, a common host/parasite phenomenon.
      
The aim was to investigate the interaction between host body condition and intensity of infection with parasites.
      
The following results have a bearing on the problem of heredity to resistance:1.Though the intensity of infection is very variable several results from the investigation indicate a genetic basis for mildew resistance.
      
Following are the results:1.Obvious similarity between susceptibility curves for all combinations examined points to a close relationship between intensity of infection and climatic conditions.
      
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  degree of susceptibility
The results on the responses of pollen grains as well as leaves to the toxin are in agreement with the degree of susceptibility/resistance of these species to A.
      
A second locus, TuRB02, that appeared to control the degree of susceptibility to the TuMV isolate CHN 1 in a quantitative manner, was identified on the C-genome linkage group N14.
      
A varying degree of susceptibility or resistance seems to be conferred by these DQ molecules, where those determining resistance are dominant over those determining susceptibility.
      
In isolation, each of these allelic variants affords a small degree of susceptibility to diabetes.
      
Some degree of susceptibility to IAK was found in five acute myeloid and five lymphoid leukaemias, which was markedly dependent upon the source of the effector lymphocytes and did not correlate with the degree of IAK on K562.
      
更多          
  infection degree
The infection in ticks was more often detected by IF than by isolation (p?=?0.0153) and isolation success was higher when the infection degree in ticks was high (p?=?0.0397).
      
There were significant differences in the expression of field resistance characterized by some basic epidemiological parameters (maximum infection degree, area below curve).
      
  infection extent
In addition Family Infection Extent (FIE) was calculated as :(number of infected members/total number of members) x 100.
      
  其他


The headblight or scab of wheat caused by Gibberella zeae (Schw.) Petch.has in recent years become more prevalent in the rice-wheat growing area ofEastern China with two heavy epidemics in 1952 and in 1954.It was reportedfrom this area that wheat varieties showed marked differences in their susceptibilityto headblight and that native varieties in general were less susceptible than theimproved ones.It was also reported that the degree of susceptibility appeared tobe related to the stage of host development.In...

The headblight or scab of wheat caused by Gibberella zeae (Schw.) Petch.has in recent years become more prevalent in the rice-wheat growing area ofEastern China with two heavy epidemics in 1952 and in 1954.It was reportedfrom this area that wheat varieties showed marked differences in their susceptibilityto headblight and that native varieties in general were less susceptible than theimproved ones.It was also reported that the degree of susceptibility appeared tobe related to the stage of host development.In 1952,varieties with earlier date ofheading were generally less susceptible than those which headed late. Varietal tests for the headblight resistance were made in Nanking in 1952and 1954.In 1952,235 varieties and hybrids were studied for their resistance toscab under natural conditions in the field.Great differences were found in theirdegree of infection,although none of them was immune.The percentages of in-fected heads ranged from 0.9 to 89.1 with most of them having 10 to 40% infec-tion.No definite correlation was seen between the percentage of infection andthe date of heading or of maturing.In 1954,tests on varietal resistance to scabwere again made with 40 varieties and hybrids including those being relatively lesssusceptible in the previous test.Attempts were made to induce epidemics in thefield by means of artificial inoculation.Results indicated that both mycelial andconidial suspensions were similarly effective for artificial inoculation.The averagepercentages of infected heads in the inoculated plots ranged from 4.2 to 77.7 incontrast to the uninoculated plots where the average percentages of infected headsbeing only trace to 7.1 with one variety not infected. From the experimental results obtained in 1952 and 1954,it was found thatrelative stability in resistance to headblight existed among different wheat varie-ties,although there was great variation in varietal resistance due to the effect ofenvironmental factors.Two hybrids,"5201" and "5204",were found to be muchmore resistant than all other varieties tested in both years.Hybrid "5204" gave ??0.9% of infected heads in 1952 and 3.4% in 1954,and hybrid "5201" gave5.5 and 9.0% of infected heads in the respective years.Both hybrids also possessother desirable characteristics such as early maturity,relative high yield,stiffystems,and high resistance to the stripe rust. Greenhouse studies were made in 1954 with two susceptible varieties ofwheat for testing their susceptibility to headblight at six different stages of deve-lopment from shooting to hard dough.Results indicated that the plant was sus-ceptible at all these stages of development with a tendency of being more heavilyinfected toward maturity.It was also observed that temperature had obvious effecton the degree of infection.Plants inoculated at flowering stage were more heavilyinfected when kept at 25℃ after inoculation than when kept at 15℃.However,the inoculated plants kept at 25℃ during the day and at 15℃ at night resultedin a degree of infection similar to those kept at 25℃ all the time.

(一)小麦赤微病在苏、浙、皖的稻麦两熟地区经常严重发生,1952及1954年两度猖獗流行,造成苏南及浙江地区小麦生产上的严重损失。通过调查,发现各地小麦品种对病害的反应确有显著差异。地方品种,一般发病较轻,而改良品种如“2905”、“2419”、“玉皮”、“矮立多”等,常常严重地感染病害。(二)1952年在自然情况下,观察此较235个小麦品种结果,虽没有一个品种不发病,但品种间的发病率相差极大,自0.9%至89.1%,而不同品种感染程度的轻重与抽穗期及成熟期的早迟关系不大。(三)1954年大田人工接种结果,效果显著,供试40个品种接种区的最高发病率达77.7%,而自然感染区的最高发病率只有7.1%。在接种试验中,初步证明:(1)大量有效的病原体与适合病害发生的气候因子同是病害流行的主要条件;(2)接种方法,用菌丝体接种与用分生孢子接种的效果,并无多大差别;(3)品种的抽穗先后,与发病轻重无一定关系。(四)温室试验指出,小麦自抽穗至糊熟各期麦穗被害率相似,但小穗的被害率在抽穗期最低,开花以后,有愈近成熟感染程度愈重的趋势。(五)开花期接种后的小麦,置於25℃的麦穗被害率和置於15℃的相似...

(一)小麦赤微病在苏、浙、皖的稻麦两熟地区经常严重发生,1952及1954年两度猖獗流行,造成苏南及浙江地区小麦生产上的严重损失。通过调查,发现各地小麦品种对病害的反应确有显著差异。地方品种,一般发病较轻,而改良品种如“2905”、“2419”、“玉皮”、“矮立多”等,常常严重地感染病害。(二)1952年在自然情况下,观察此较235个小麦品种结果,虽没有一个品种不发病,但品种间的发病率相差极大,自0.9%至89.1%,而不同品种感染程度的轻重与抽穗期及成熟期的早迟关系不大。(三)1954年大田人工接种结果,效果显著,供试40个品种接种区的最高发病率达77.7%,而自然感染区的最高发病率只有7.1%。在接种试验中,初步证明:(1)大量有效的病原体与适合病害发生的气候因子同是病害流行的主要条件;(2)接种方法,用菌丝体接种与用分生孢子接种的效果,并无多大差别;(3)品种的抽穗先后,与发病轻重无一定关系。(四)温室试验指出,小麦自抽穗至糊熟各期麦穗被害率相似,但小穗的被害率在抽穗期最低,开花以后,有愈近成熟感染程度愈重的趋势。(五)开花期接种后的小麦,置於25℃的麦穗被害率和置於15℃的相似,但前者的小穗被害率此后者高。日间25℃和夜间15℃交替的变温处理,发病情形与始终置於25℃的相近。(六)不同小麦品种对于赤微病具有相对稳定的抵抗性或感染性。“5201”及“5204”等杂交系,在自然感染和人工接种情形下,发病都很轻微,并且具有早熟、丰产、秆硬和高度抵抗条锈等优良特性。

An ecological survey of ergot production on various hosts in Changpei and Kuyan districts was made in 1957.Alkaloid contents of ergot collections from the above mentioned districts as well as from Northeastern China were analysed. The average percentages of ergot infection of Aneurolepidium chinese,A.dasystachys,Hordeum brevisubulatum,H.violaceum,Secale cereale,Agropyron cristatum and Clinelymus dahuricus were 68.48,60.97,60.00,50.00,42.00,14.00 and 6.59 respectively.Calamagrostis epigeios was very lightly...

An ecological survey of ergot production on various hosts in Changpei and Kuyan districts was made in 1957.Alkaloid contents of ergot collections from the above mentioned districts as well as from Northeastern China were analysed. The average percentages of ergot infection of Aneurolepidium chinese,A.dasystachys,Hordeum brevisubulatum,H.violaceum,Secale cereale,Agropyron cristatum and Clinelymus dahuricus were 68.48,60.97,60.00,50.00,42.00,14.00 and 6.59 respectively.Calamagrostis epigeios was very lightly infected,while there was no infection at all on wheat,barley and Bromus inermis.A.dasystachys,A.chinense,and Clinelymus dahuricus were most widely distributed among wild hosts,and their average numbers of culms per square meter were 61,79,and 38 respectively.According to preliminary estimation,the annual production of ergot in Changpei and Kuyan exceeded 60 tons.The ecological factors that favored the ergot epidemic were:(1)The presence of widely distributed susceptible host plants,(2)The presence of large amount of inoculum,(3)Severe winter that favors the venalization of ergot and wet summer that favors infection.Ergots were mostly formed from July 20 to August 10,with the middle part of August being the most suitable time for harvest. The total alkaloid contents of ergot varied with different hosts and decreased by the following order:Calamagrostis epigeios(0.577% estimated as ergotoxine),Clinelymus sibiricus(0.44%),Clinelymus dahurious(0.30—0.34%),Aneurolepidium dasystachys(0.13—0.15%),Aneurolepidium chinense(0.115%),rye(0.061—0.065%).The amount of total alkaloid of the ergots from same host species was rather stable and there seemed no significant differences among different localities.It appeared that there was no relationship between the size or color of ergot and the amount of alkaloid contents.Ergots of Aneurolepidium dasytachys,A.chinense,Clinelymus dahuricus,C.sibiricus and of rye were identified as Claviceps purpurea(Fr.)Tnl.and ergot of Calamagrostis epigeios was identified as C.microcephala(Wallr.)Tul.

1957年作者等在华北盛产野生麦角的地区张北及沽源进行了生态因子的调查,并在东北搜集了不同寄主上野生麦角的样本作含硷量的此较分析.张北及沽源禾本科植物对麦角病感染程度由重至轻的顺序为碱草、赖草、大麦草、紫穗大麦草、黑麦、偏穗冰草及披碱草,其平均感染百分数分别为68.48、60.97、60.00、50.00、42.00、14.00及6.59.此外拂子茅亦有轻度感染.大麦、小麦、燕麦及无芒雀麦均未发现感染.野生寄主植物中以赖草和碱草分布最广,其大片单独群落的密度每平方米平均分别为61茎和79茎,披碱草亦有大片羣落,平均密度每平方米为38茎,其他禾草的分布极为零星.估计张北及沽源麦角的年产量至少有12万市斤。张北及沽源盛产野生麦角的生态因子为:(1)有大量的感染寄主,(2)每年积累大量菌源,(3)长期寒冷的冬季,及6、7、8月阴雨气候.麦角形成最盛期为7月下旬至8月上旬,采收最合宜的时期为8月中旬.华北及东北地区各种寄主植物所产麦角含硷量差别很大,由高至低的顺序为:拂子茅(麦角总硷计0.577%),老芒麦(0.44%),披碱草(0.30-0.34%),赖草(0.13-0.15%),碱草(0.115%),...

1957年作者等在华北盛产野生麦角的地区张北及沽源进行了生态因子的调查,并在东北搜集了不同寄主上野生麦角的样本作含硷量的此较分析.张北及沽源禾本科植物对麦角病感染程度由重至轻的顺序为碱草、赖草、大麦草、紫穗大麦草、黑麦、偏穗冰草及披碱草,其平均感染百分数分别为68.48、60.97、60.00、50.00、42.00、14.00及6.59.此外拂子茅亦有轻度感染.大麦、小麦、燕麦及无芒雀麦均未发现感染.野生寄主植物中以赖草和碱草分布最广,其大片单独群落的密度每平方米平均分别为61茎和79茎,披碱草亦有大片羣落,平均密度每平方米为38茎,其他禾草的分布极为零星.估计张北及沽源麦角的年产量至少有12万市斤。张北及沽源盛产野生麦角的生态因子为:(1)有大量的感染寄主,(2)每年积累大量菌源,(3)长期寒冷的冬季,及6、7、8月阴雨气候.麦角形成最盛期为7月下旬至8月上旬,采收最合宜的时期为8月中旬.华北及东北地区各种寄主植物所产麦角含硷量差别很大,由高至低的顺序为:拂子茅(麦角总硷计0.577%),老芒麦(0.44%),披碱草(0.30-0.34%),赖草(0.13-0.15%),碱草(0.115%),黑麦(0.061-0.065%);同一寄主植物在不同地区所产麦角的含硷量差异很少.含硷量的高低与菌核的大小,颜色等关系亦不大.寄生于赖草、碱草、披碱草、老芒麦及黑麦的麦角菌经鉴定均为Clavicepspurpurea,寄生于拂子茅的麦角菌为C.microcephala。

Two citrus mycorrhizal fungi, found in China, were named C C-l and C C-2 for the present. According to microscopical anatomy observation and pot inoculation experiments, both of them belong to Phytomycetus endophytic fungi and are of highly distinctive vesicular-arbuscular type mycorrhizal in associa-tion with citrus. C C-l possesses the characteristics of producing plenty of ve-sicles more than C C-2 and forming arbuscles in the parenchyma cells of root cortex. Hyphae of C C-l extend into rhizosphere soil to...

Two citrus mycorrhizal fungi, found in China, were named C C-l and C C-2 for the present. According to microscopical anatomy observation and pot inoculation experiments, both of them belong to Phytomycetus endophytic fungi and are of highly distinctive vesicular-arbuscular type mycorrhizal in associa-tion with citrus. C C-l possesses the characteristics of producing plenty of ve-sicles more than C C-2 and forming arbuscles in the parenchyma cells of root cortex. Hyphae of C C-l extend into rhizosphere soil to enlarge the absorptive area of roots and hyphae tip forms knotty microverru.

在我国发现了两种柑桔菌根真菌,暂编号为中柑1号和中柑2号。通过显微解剖观察和盆栽接种试验证明二者均属于藻菌类内囊霉属的“泡囊-丛状(V-A)型内生菌根真菌。中柑1号在锦橙根的皮层组织内产生丰富的泡囊和丛状体,菌丝伸出根外形成瘤状吸盘结构。 取七个柑桔品种的实生苗,在盆栽灭菌土的条件下,分别人工接种这种菌根真菌,均使柑桔的根系感染而形成菌根。但不同柑桔品种的菌根感染程度不同,以锦橙对中柑1号和粗柠檬对中柑2号的感染率为最高,枳对两种菌根真菌的感染程度极低,甚至不感染。 菌根显著地促进柑桔植株的生长,但同一种菌根菌对不同的柑桔品种的生长反应不一致。中柑1号使锦橙实生苗的枝茎和根的长度为对照的2倍以上;中柑2号使粗柠檬的长度为对照的2.8倍。以菌根的依赖和根穗比值也说明了菌根对柑桔生长的反应。

 
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